1756-A13【机架】1756-A13

1756-A13
1756-A13
1756-A13
控制继电器存在的缺点

　　今天继电器已应用到家庭及工业控制的各个领域。他们比以往的产品具有更高的可靠性。但是，这也是随之带来的一些问题。如绝大多数控制继电器都是长期磨损和疲劳工作条件下进行的，容易损坏。而且继电器的触点容易产生电弧，甚至会熔在一起产生误操作，引起严重的后果。再者，对一个具体使用的装有上百个继电器的设备，其控制箱将是庞大而笨重的。在全负荷运载的情况下，大的继电器将产生大量的热及噪声，同时也消耗了大量的电能。并且继电器控制系统是手工接线、安装，如果有简单的改动，也需要花费大量时间及人力和物力去改制、安装和调试。

ALLEN BRADLEY 1492-SP1D040 SERIES C MINI CIRCUIT 4A 1 POLE

ALLEN BRADLEY 104S-C37DJ210BC SERIES C SAFTEY CONTACTOR 600V AC MAX

ALLEN BRADLEY 100S-C37DJ14BC SERIES C SAFETY CONTACTOR 600V 37A

ALLEN BRADLEY 800P-F2CGA SERIES E PALM OPERATED PUSH BUTTON

SIEMENS 3RV1021-1CA10 CIRCUIT BREAKER 3 POLE 1.8-2.5AMP GB14048.2/4/50

REES 50703N0-NC CONTACT BLOCK 600AMP 15VAC

FESTO ADVU-32-40-P-A COMPACT CYLINDER 0,8-10 BAR

BRAD HARRISON DN11A-M210 DEVICENET 5P CABLE MINI CHANGE M/F ST/ST

ALLEN BRADLEY 1492-A1B8 SERIES A SINGLE PHASED BUS BAR 80 A

EFECTOR PN5006 ELECTRIC PRESSURE MONITOR 36VDCF 250MA

ALLEN BRADLEY 800FM-SM22MX11 SERIES A MAINTAINED SELECTOR SWITCH 2 POS

ALLEN BRADLEY 800F-MD3CX11 SERIES A FULL VOLTAGE CONTACT MODULES

APOLLO CONBRACO 82-105-19 BALL VALVE 1" NPT BRONZE LOCKING

PIAB X1072 VACUUM CHECK VALVE VT-1H VACUSTAT WITH COAX AIR IN G1/8

TURCK RKM 46-8M/S600 CORDSET, MINIFAST, 4 POLE, SINGLE ENDED, FEMALE

TURCK RKM 36-8M CORDSET, MINIFAST, 3 POLE, FEMALE, STRAIGHT

TURCK NI25U-CK40-ADZ30X2-B1131 PROXIMITY SWITCH, 25MM, 20-250VAC

TURCK NI20U-MT30-AN6X2-H1141 PROXIMITY SENSOR, 200MA, 10-30VDC

TURCK MK13-UPN-EX0/24VDC ISOLATING SWITCH AMPLIFIER, MULTI-MODULE

TURCK FSSDWE D95 FKSDWE 456-0.5M-0.5M CORDSET, 9-POLE

TURCK BI5U-MT18H-AP6X2-H1141/S1589 PROXIMITY SENSOR, 10-30VDC

TURCK BI15U-CP40-VP4X2 PROXIMITY SWITCH, UPROX, 10-65VDC, 200MA, 15MM

TURCK BI15U-CP40-AP6X2 PROXIMITY SWITCH, UPROX, 10-30VDC, 200MA